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require "active_support/core_ext/module/delegation"
class ActiveStorage::Service::MirrorService < ActiveStorage::Service
attr_reader :primary, :mirrors
delegate :download, :exist?, :url, to: :primary
# Stitch together from named configuration.
def self.build(mirror_config, all_configurations) #:nodoc:
primary = ActiveStorage::Service.configure(mirror_config.fetch(:primary), all_configurations)
mirrors = mirror_config.fetch(:mirrors).collect do |service_name|
ActiveStorage::Service.configure(service_name.to_sym, all_configurations)
end
new primary: primary, mirrors: mirrors
end
def initialize(primary:, mirrors:)
@primary, @mirrors = primary, mirrors
end
def upload(key, io, checksum: nil)
each_service.collect do |service|
service.upload key, io.tap(&:rewind), checksum: checksum
end
end
def delete(key)
perform_across_services :delete, key
end
private
def each_service(&block)
[ primary, *mirrors ].each(&block)
end
def perform_across_services(method, *args)
# FIXME: Convert to be threaded
each_service.collect do |service|
service.public_send method, *args
end
end
end
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